10 Channel Memory HiLogger
Hioki Memory HiLoggers are high-speed data loggers for recording multiple chanels of voltage, temperature, pulse or rotation signals, providing complete isolation between channels and strong noise resistance . The LR8431 logs data at 10ms speeds across 10 channels simultaneously, and features a bright color LCD for crystal clear waveform displays.
The LR8431-20 delivers improved thermocouple measurement accuracy and reference junction compensation accuracy.
Example: When measuring 50°C water with a type-K thermocouple, The LR8431-20 provides improved accuracy of ±1.5°C, whereas previous models provided accuracy of ±3°C.
Ten Isolated Analog Input Channels
There's no need to worry about differing potentials of measurement objects when measuring temperature and voltage. All ten analog channels are isolated. Even when measuring temperature and voltage at the same time, interchannel interference and electric shock hazards are eliminated. The four pulse channels are ideal for counting revolution pulses to measure rotation speed. (Pulse inputs share common ground.)
Note: Isolation between channels is possible through the use of semi-conductor relays. Voltage exceeding the product specifications, such as that originating from lightning surges or other sources, should never be applied between each channel; otherwise the relays will short and the recorder will be damaged.
High-Speed Sampling
10 ms Sampling and Recording Across All Channels
Abrupt changes in load need to be measured during development of EV • HV • PHV, for which multi-channel, 10 ms sampling is essential. This HiLOGGER can track waveforms that could not be followed with the 100 ms sampling interval previously available.
Enhanced Noise Suppression
Noise-resistant measurement circuitry for improved readings
Measurement involves the deployment of a delta-sigma type A/D converter. Suppress inverter switching noise and line-frequency hum by digital filtering with the HiLOGGER's proprietary oversampling technology.
Note: Optimum noise suppression is obtained for recordings at least two seconds long
In The Box
- Instruction manual ×1
- Measurement guide ×1
- CD-R (data collection software "Logger Utility") ×1
- USB cable ×1
- AC adapter Z1005 ×1
Manuals/Guides
Brochures
- Hioki Data Logger Selection Guide
Manuals
- Hioki LR8431-20 User Manual
Spec Sheets
- Hioki Memory HiLogger LR8431 - Data Sheet
Manufacturer Specs
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General specifications |
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Input System/Channels |
Analog inputs: 10 (M3 mm dia. screw terminal block), electrically isolated between channels, and from chassis ground. |
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Analog Inputs |
Maximum rating: 60 V DC (max. voltage between input terminals without damage) |
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Pulse Inputs |
Input limits: -5 to +10 V DC (max. voltage between input terminals without damage), non-isolated (common ground between pulse input channels, and with chassis) |
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Alarm Output |
One channel, non-isolated: output from external control connector (common ground) |
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Internal storage |
3.5 MWords |
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External storage |
CF card: CF card slot × 1, HIOKI 9727 (256 MB), 9728 (512 MB), 9729 (1 GB), 9830 (2 GB), Data format: FAT, FAT32 |
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Backup Function |
Backup battery life for clock and settings: approx. 5 years For measurement data: 100 hours with fully charged battery pack, or for as long as AC adapter is connected |
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External Control Terminals |
External Trigger/Event Mark input (exclusion function), Trigger Output, Alarm Output |
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Display type |
4.3-inch WQVGA-TFT color LCD (480 × 272 dots) |
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Displayable languages |
English, Japanese |
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External Interface |
One USB 2.0 series mini B receptacle |
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Environmental conditions |
Temperature and humidity range for use: 0°C to 40°C (32°F to 104°F), (or 5°C to 30°C, 41°F to 86°F when battery charging), 80% rh or less |
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Compliance standard |
Safety: EN61010, EMC: EN61326, EN61000 |
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Power Sources |
(1) 100 to 240 V AC, 50/60 Hz using AC ADAPTER Z1005 |
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Power Consumption |
10 VA |
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Continuous Operating Time |
Approx. 2.5 hours (with Battery Pack Model 9780 while saving to the CF card) |
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Dimensions and mass |
Approx. 176 mm (6.93 in) W × 101 mm (3.98 in) H × 41 mm (1.61 in) D, 550 g (19.4 oz) (HiLOGGER only) |
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Supplied Accessories |
Measurement Guide × 1, AC ADAPTER Z1005 × 1, USB cable × 1, CD-R (Instruction Manual, data collection software “Logger Utility”) × 1 |
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Trigger functions |
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Trigger Source |
All analog and pulse channels P1 to P4, external trigger, logical sum (OR) and product (AND) of each trigger source |
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External Trigger |
Criteria: Short-circuit between external trigger input and ground, or voltage input (H-L transition from [3.0 – 5 V] to [0 – 0.8 V]) |
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Trigger Timing |
Start, Stop and Start/Stop |
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Trigger Types |
Level: Triggers when rising or falling through preset threshold |
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Level Resolution |
Analog: 0.025% f.s. (f.s. = 10 display divisions) |
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Pre-trigger |
Records for a specified period before triggering; can be set for real-time saving |
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Trigger Output |
(1) Output signal at trigger occured, (2) Output signal at start or trigger occured, (1) or (2) mode selectable Open collector (active low, with voltage output, at least 10 ms pulse width, Voltage levels: 4.0 to 5.0 V (H) and 0 to 0.5 V (L), Max. sink current: 5 mA DC, Max. applied voltage: 30 V DC) |
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Measurement Settings |
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Recording Intervals |
10 ms to 1 hour, 19 selections |
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Graph Timebase Scaling |
100 ms to 1 day per division, 21 selections |
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Repeating Recording |
(ON/OFF) Enable to repeat recording after the specified recording time span has elapsed |
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Recording Time |
Enable continuous recording ON (records until the Stop key is pressed), or disable to record for a specified time span (days, hours, minutes and seconds) |
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Timer Recording |
(ON/OFF) Enable to record for a specified time span, or between specified start and stop times |
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Auto Saving |
Waveform (Binary or CSV data): stores data to the CF card or USB memory during real-time measurement |
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Data Storage Methods |
Each recording can be saved in a separate file |
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Load Stored Data |
Stored data can be recalled by the HiLOGGER in 3.5 MWord (7 MB) quantities (for a single channel; less for multiple channels) |
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Settable Save/Reload |
Configure saving and reloading to and from CF card or USB memory or internal memory Ten types for internal memory, no limit for CF card and USB memory |
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Numerical Calculations |
Calculations 1 to 4, may be simultaneous Selections: average, peak, maximum and minimum values, time-to-maximum and time-to-minimum |
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Selectable Filters |
50Hz, 60 Hz, or OFF (digital filtering of high frequencies on analog channels) |
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Channel Settings |
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Channel Settings |
Enable/disable measurement (ON/OFF), selectable waveform color |
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Measurement parameters |
Ranges |
Range of Measurements |
Finest Resolution |
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Voltage |
100 mV f.s. |
-100 mV to +100 mV |
5 µV |
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1 V f.s. |
-1 V to +1 V |
50 µV |
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10 V f.s. |
-10 V to +10 V |
500 µV |
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20 V f.s. |
-20 V to +20 V |
1 mV |
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100 V f.s. |
-60 V to +60 V |
5 mV |
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1 - 5 V (Note) |
1 V to 5 V |
500 µV |
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Accuracy: ±0.1 % f.s. (Note: 1 - 5V range's f.s. = 10 V ) |
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Measurement parameters |
Ranges |
Range of Measurements |
Finest Resolution |
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Temperature |
2000 °C f.s. |
-200 °C to 2000 °C |
0.1 °C |
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Temperature |
(K) -200 °C to 1350 °C (J) -200 °C to 1200 °C |
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Temperature input ranges |
K, J, E, T, : ±1.0 °C (-100 °C or more), ±1.5 °C (-200 °C to -100°C) |
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Temperature Other Functions |
Thermocouple burn-out detection: ON or OFF |
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Measurement parameters |
Ranges |
Range of Measurements |
Finest Resolution |
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Pulse |
1,000 M (count) f.s. |
0 to 1,000 M (count) |
1 (count) |
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Totalization mode: cumulative (counts from start) |
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Pulse (Rotations) |
5,000/n (r/s) f.s |
0 to 5,000/n (r/s) |
1/n (r/s) |
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Settable pulses per rotation: 1 to 1,000 ("n" above is the number of sensor output pulses per rotation) |
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Slope Setting |
↑ (count of L-to-H pulse transitions), ↓ (count of H-to-L pulse transitions) |
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Displayed Range |
Specified by position, or by upper/lower display limit values (Upper/lower limit values only at Totalization mode) |
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Common Channel Settings |
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Scaling |
Decimal (display decimal values), Exponential (display base-10 exponents), or Off |
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Other Common Channel Settings |
Enter comments for each channel, set start/stop triggers and alarm criteria |
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Logger Utility (bundled application software) |
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Operating environment |
One CD-R, CPU: Pentium 3 (500 MHz or more), at least 512 MB of memory |
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Real-time data acquisition |
Measurements on multiple loggers connected by USB can be controlled to sequentially acquire, display and save waveform data (for recording up to 10 million samples) *LAN not available with the Model LR8431-20 Number of controllable instruments: up to 5 units |
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Data acquisition settings |
Data acquisition settings for the HiLOGGER |
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Waveform display |
Processed data file: Real-time data acquisition file (LUW format), Record to internal memory data (MEM format) |
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Data conversion |
Target data: Real-time data acquisition file (LUW format), Record to internal memory data (MEM format), Waveform processing data |
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Parameter calculations |
Target data: Real-time data acquisition file (LUW format), Record to internal memory data (MEM format), Data acquired in real time, Waveform processing data |
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Search function |
Target data: Real-time data acquisition file (LUW format), Record to internal memory data (MEM format), Waveform processing data |
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Print function |
Supported printer: printer compatible with the OS |
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Waveform processing |
Processing items: Four arithmetic operations |
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Tech Specs
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Dataloggers / Data Acquisition/Data Recorders Template |
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Type (Recorders) |
Data Logger |
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Style (Recorders) |
Bench / Portable |
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# Channels Expanded plus Logic (Recorders) |
10 EA |
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# Channels Base Unit (Recorders) |
10 EA |
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Display (Recorders) |
Built-in, Included w/ Base Unit |
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Sampling Interval (Controllers/Recorders) |
10 ms |
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Sampling Frequency (Recorders) |
100 S/s (0.0001 MS/S) |
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Input Types (Controllers/Recorders) |
Digital / Logic / On-Off, Frequency / Pulse, T/C - RTD, Voltage |
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Output Types (Controllers/Recorders) |
Logic / SSR |
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Power Source |
AC Line, Battery |
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Screen Size |
4.3 IN |
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Special Functions (Recorders) |
External Trigger, Flow / Speed Totalization, PC Software Available |
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Data storage |
Yes |
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Isolated Inputs (Recorders) |
Yes |
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Test Equipment General Attributes |
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Unique Features |
-Portable data logger with 10 channels |
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Warranty |
1 YEARS |
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Safety Approval |
CE |
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Interfaces I/O |
LAN / Ethernet, Web Host / Web Server, Analog Input , USB |
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Storage |
Compact Flash |
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Product Weight |
550 GRAMS (1.21 LBS) |
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Product Height |
41 MM (1.61 IN) |
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Product Length |
41 MM (1.61 IN) |
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Product Width |
176 MM (6.93 IN) |
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Data Logging |
Yes |
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HTS/Schedule B Number |
9030.32.0000 |
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ECCN Number |
3A992 |
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Calibration Included |
None |
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Battery Type |
NimH |
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Power Supply Voltage |
120V/220V Universal, Battery Powered |
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Country of Origin |
Japan |
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Shipping Height |
5.50 IN |
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Shipping Length |
9.00 IN |
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Shipping Width |
6.50 IN |

